練り粉 is read as ねりこ (neriko) and means dough.
ねりこ
neriko
れんしゅう
practice
ねる
to tan (leather)
ねりあげる
to knead well
ねり
parading of portable shrines and floats at festivals
ねりなおす
to knead again
れんたつ
expert(ise)
ねりあわせる
to knead together
れんど
skill
れんせい
training
ねりもの
paste products (incl. sweets, fish paste, etc.)
れんしゅうあいて
sparring partner
れんしゅうもんだい
exercises